Autocomplete machine name handling does not match to machine name

This is caused by 📌 ComponentSourceInterface::submitConfigurationForm and validateConfigurationForm are never called Active apparently because Webform uses Drupal\Core\Entity\Element\EntityAutocomplete which has a validateEntityAutocomplete which is where the mapping happens. That is defined as an #element_validate on the element which is never called. We could potentially mark this as a duplicate of that one but maybe good to keep a use case specific issue around, especially with the "webform" name where people will encounter it.